Rotational speed of the flywheel

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Problem: A wind turbine stores its peak energy output in a flywheel whose characteristics are:

  • Solid disk of uniform thickness
  • Diameter = 4.0 m
  • Weight = 15,000 kg.

Assume that the wind speed has suddenly slowed down to where the turbine is no longer generating any power. The rotational speed of the flywheel at that time is 50,000 RPM. For how long can the energy stored in the flywheel supply the needs of a building whose steady load is1000 kW? Assume that the rotational speed of the flywheel can be reduced to 0.

Reference no: EM132416605

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